Time-operating mechanism for electric switches.



L. G. GOPEMAN.

TIME OPERATING MECHANISM FOR ELECTRIC SWITCHES.

APILIOATION FILED JULY 28, 1911.

Patented July 28, 1914.

[7? Ti?) 0/ Copama 72 A lhy d- Gmff 2.Mm WWW UNITED STATES PATENT OFFICE.

LLOYD GEOFF COPEMAN, OF FLINT, MICHIGAN, ASSIGNOB -TO COPEMAN ELECTRIC STOVE COMPANY, OF FLIN T, MICHIGAN, A CORPORATION OF MICHIGAN.

Specification of Letters Patent.

Patented July 28, 1914.

Application filed July 28,1911. Serial No. 841,005.

To all whom it may concern:

Be it known that I LLOYD GROFF COPE- MAN, a citizen of America, residing at Flint, in the county of Genesee and State of Michigan, have invented certain new and useful Improvements in Time Operating Mechanism for Electric Switches, of which the following is a specification, reference being accompanying drawings.

The invention relates to time-controlled mechanism for electric switches, and consists in the peculiar construction of the switch actuating mechanism as hereinafter set forth.

In the drawings,Figure 1 is a perspective view of a clock to which my improvements are applied; Fig. 2 is a perspective view of the switch actuating arm detached; and Fig. 3 is a rear elevation showing the parts in position for operation.

It is one of the objects of the invention to obtain ,a construction of time controlled switch operating mechanism which may be applied to an ordinary alarm clock with but slight modification in the construction.

It is a further object toprovide means for. varying theactuating forks so as to adapt the mechanism to switches of different size.

As shown, A is the ordinary construction of alarm clock provided with a metallic case and having the winding stem B for the time had therein to the -mechanism, the winding stem C for the alarm, the knob D for setting the hands, and the knob Efor setting the alarm. To adapt this construction for use in controlling the switch, the case is preferably provided with in position by first engaging the legs J with the bearings K, and then by springing the leg F to engage the bifurcated foot G with the headed pin H.

The switch actuating device comprises an arm 'L secured to the alarm winding stem C to swing through a partial rotation.

and actuated upon the release of this stem The amount of movement is limited by stops M,

the United States of preferably in the form of posts projecting outward from the rear face of the case into the path of the arm. N is the handle of the switch, which projects into the path of a roller 0 secured to the free end of the arm L, the arrangement being such that in the partial rotation of said arm the roll 0 will strike against the switch handle N and actuate the same to either close or open the switch.

For operating switches of different size and under different conditions, the course required will vary. I have therefore made provision for changing the tension of the ac-. tuatlng spring so that it may be adjusted to the requirements. As shown, this is accompllshed by a detachable engagement between the arm L and the winding stem, per mltting the removal of the arm so that the stem may be wound to lace the desired tension on the spring. .T e arm may then be replaced and secured to the stem and adjusted in position for actuating the switch. If in place of this detachable connection the arm were fixed to the stem the stops M would prevent any turning of the stem more than the angle between the stops.

The specific construction of connectionbetween thearm and the stem, as shown, consists of a slotted bearing P at the inner end of the arm L, which is engageable with a transversely-extending key Q on the stem, while a threaded extension R is anchored with the winding handle S, which latter is provided with a-clamping plate Tfor bearing-against the arm L. The arrangement is one which permits of releasing the arm by opening the switch as desired. Atthe completion of the operation the roller- 0 is completely withdrawn from the path of the switch handle, which will actuated by hand to its initlal position. What I claim as my invention is,- 1. The combination with an alarm clock mechanism, of a winding stem therefor, a

permit it to be key for Winding said stem, said arm being attachable to the stem after the latter has been turned to place the alarm mechanism under the desired tension and said key serv- 15 ing to clamp said arm to said stem.

11 testimon whereof I afiix my signature in presence 0 two Witnesses.

LLOYD GROFF COPEMAN.

switch actuating am having a slotted hearing for detachabl engaging said stem, a transversely exten in key on said stem for engaging said slotte bearing, a threaded stud beyond said key, and a wlnding handle engagin said threaded stud and provided with a c alnping face for engagin said arm.

2. The combmatiomwith an a arm clock mechanism and a winding stem therefor, of Witnesses: a switch actuating arm havin a detachable S. H. ABBOTT, sliding engagement w th sal stem, and a M. CERF. 

